1/*
2 * Copyright © 2011 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 *    Benjamin Franzke <benjaminfranzke@googlemail.com>
26 */
27
28#ifndef _GBM_DRI_INTERNAL_H_
29#define _GBM_DRI_INTERNAL_H_
30
31#include <xf86drm.h>
32#include <string.h>
33#include <sys/mman.h>
34#include "gbmint.h"
35#include "c11/threads.h"
36
37#include <GL/gl.h> /* dri_interface needs GL types */
38#include "GL/internal/dri_interface.h"
39
40struct gbm_dri_surface;
41struct gbm_dri_bo;
42
43struct gbm_dri_visual {
44   uint32_t gbm_format;
45   int dri_image_format;
46   struct {
47      int red;
48      int green;
49      int blue;
50      int alpha;
51   } rgba_shifts;
52   struct {
53      unsigned int red;
54      unsigned int green;
55      unsigned int blue;
56      unsigned int alpha;
57   } rgba_sizes;
58   bool is_float;
59};
60
61struct gbm_dri_device {
62   struct gbm_device base;
63
64   void *driver;
65   char *driver_name; /* Name of the DRI module, without the _dri suffix */
66   bool software; /* A software driver was loaded */
67
68   __DRIscreen *screen;
69   __DRIcontext *context;
70   mtx_t mutex;
71
72   const __DRIcoreExtension   *core;
73   const __DRIdri2Extension   *dri2;
74   const __DRI2fenceExtension *fence;
75   const __DRIimageExtension  *image;
76   const __DRIswrastExtension *swrast;
77   const __DRI2flushExtension *flush;
78
79   const __DRIconfig   **driver_configs;
80   const __DRIextension **loader_extensions;
81   const __DRIextension **driver_extensions;
82
83   __DRIimage *(*lookup_image)(__DRIscreen *screen, void *image, void *data);
84   GLboolean (*validate_image)(void *image, void *data);
85   __DRIimage *(*lookup_image_validated)(void *image, void *data);
86   void *lookup_user_data;
87
88   __DRIbuffer *(*get_buffers)(__DRIdrawable * driDrawable,
89                               int *width, int *height,
90                               unsigned int *attachments, int count,
91                               int *out_count, void *data);
92   void (*flush_front_buffer)(__DRIdrawable * driDrawable, void *data);
93   __DRIbuffer *(*get_buffers_with_format)(__DRIdrawable * driDrawable,
94			     int *width, int *height,
95			     unsigned int *attachments, int count,
96			     int *out_count, void *data);
97   int (*image_get_buffers)(__DRIdrawable *driDrawable,
98                            unsigned int format,
99                            uint32_t *stamp,
100                            void *loaderPrivate,
101                            uint32_t buffer_mask,
102                            struct __DRIimageList *buffers);
103   void (*swrast_put_image2)(__DRIdrawable *driDrawable,
104                             int            op,
105                             int            x,
106                             int            y,
107                             int            width,
108                             int            height,
109                             int            stride,
110                             char          *data,
111                             void          *loaderPrivate);
112   void (*swrast_get_image)(__DRIdrawable *driDrawable,
113                            int            x,
114                            int            y,
115                            int            width,
116                            int            height,
117                            char          *data,
118                            void          *loaderPrivate);
119
120   struct wl_drm *wl_drm;
121
122   const struct gbm_dri_visual *visual_table;
123   int num_visuals;
124};
125
126struct gbm_dri_bo {
127   struct gbm_bo base;
128
129   __DRIimage *image;
130
131   /* Used for cursors and the swrast front BO */
132   uint32_t handle, size;
133   void *map;
134};
135
136struct gbm_dri_surface {
137   struct gbm_surface base;
138
139   void *dri_private;
140};
141
142static inline struct gbm_dri_device *
143gbm_dri_device(struct gbm_device *gbm)
144{
145   return (struct gbm_dri_device *) gbm;
146}
147
148static inline struct gbm_dri_bo *
149gbm_dri_bo(struct gbm_bo *bo)
150{
151   return (struct gbm_dri_bo *) bo;
152}
153
154static inline struct gbm_dri_surface *
155gbm_dri_surface(struct gbm_surface *surface)
156{
157   return (struct gbm_dri_surface *) surface;
158}
159
160static inline void *
161gbm_dri_bo_map_dumb(struct gbm_dri_bo *bo)
162{
163   struct drm_mode_map_dumb map_arg;
164   int ret;
165
166   if (bo->image != NULL)
167      return NULL;
168
169   if (bo->map != NULL)
170      return bo->map;
171
172   memset(&map_arg, 0, sizeof(map_arg));
173   map_arg.handle = bo->handle;
174
175   ret = drmIoctl(bo->base.gbm->v0.fd, DRM_IOCTL_MODE_MAP_DUMB, &map_arg);
176   if (ret)
177      return NULL;
178
179   bo->map = mmap(0, bo->size, PROT_WRITE,
180                  MAP_SHARED, bo->base.gbm->v0.fd, map_arg.offset);
181   if (bo->map == MAP_FAILED) {
182      bo->map = NULL;
183      return NULL;
184   }
185
186   return bo->map;
187}
188
189static inline void
190gbm_dri_bo_unmap_dumb(struct gbm_dri_bo *bo)
191{
192   munmap(bo->map, bo->size);
193   bo->map = NULL;
194}
195
196#endif
197